I was trying to install a custom ROM in a THL T11 from needrom.com. I managed to get into the recovery mode and wipe cache. However, I got somehow into the «ADB» menu and couldn't get out. I pulled out the battery and restarted with Power + Volume Up. To my surprise, now I end up in a blank screen after the thl logo.

As I'm running Ubuntu, I installed android-tools-adb and android-tools-fastboot. So, I typed sudo adb reboot recovery, and the phone rebooted... but it does the same: thl logo and then a blank screen. I don't know what to do next.

Edit (20.06.14)

With sudo adb reboot bootloader I got => FASTBOOT mode .... Then I wrote sudo fastboot flash recovery recovery.img with a recovery image from the needrom as well. The phone is reacting, but states: partition 'recovery' not support flash. On the laptop the info was this:

Can you bring up fastboot mode or flashmode?
– Mohamad ShamsiJun 20 '14 at 8:20

All I get is the thl logo and then the blank screen. When I type sudo adb reboot bootloader it reboots and there appears at the bottom of the screen => FASTBOOT mode... But it does actually nothing
– Ed_VilleJun 20 '14 at 8:26